Itwasrecommendedthatpassengers_____smokeduringtheflight.
A、notA
暂无解析
Itisimperativethatstudents_____theirtermpapersontime.
ProfessorJohnsonissaid_____somesignificantadvanceinhisresearchinthepastyears.
Underthis（）pressuresomeoftherocksevenbecameliquid.
Allofuswouldhaveenjoyedthepartymuchmoreifthere_____quitesuchacrowdofpeoplethere.
Wecanhear____fromthebackoftheroom.
